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- n. Plural form of pterin.
Sorry, no etymologies found.
Lovenberg W (1983) Inactivation of tyrosine hydroxylase by reduced pterins.
Stuehr, D. J. and Tainer, J. A. (2000) Structures of the N (omega) - hydroxy-L-arginine complex of inducible nitric oxide synthase oxygenase dimer with active and inactive pterins.